Pencil



April 15, 1924. 1,490,247

J. C. WAHL PENCIL Filed Sept. 14, 1921 F192 F193 .i;

Patented Apr, 15, lg lo entree enant JOHN C. WAHL, OF CHICAGO, ILLINOIS,ASSIGNOR 15,0 THE WAHL GOMPAN'Y, 0F UHICAGQ, ILLINOIS, A. CQR-EGRATIQN0F, DELAWARE.

- EENQKL.

Application files September it, 1921 semi no.

To all whom it may co'zwern:

Be it known that JOHN C. WAHL, citizen of the United States of America,residing at Chicago, in the county of Cook and State not Illinois, hasinvented certain new and useful Improvements in Pencils, of which thefollowing is a specification.

My invention relates to pencils."

It has special reference to a pencil tracting said lead propeller andone of the objects of the invention is to so co-relate the leadpropeller and the actuating means therefor that they are. relativelylongitudi-. nally adjustable by the user, without relative rotation,when assembled for operation from the main body, thus relieving'theoperator from the necessity of extending for retracting byscrew action,as in the present methods employed. a

I in the practical art of pencils of the above described class a mainbody or shell is employed and in conjunction therewith a head or closuremember is lemployed. lln this art various means have been provided torelate the head to the main body in a manner that will permit detachmentfor a relative spec lug therebetween. flue; of the; objects of theinvention is to provides. special and improved means for relating themain body and head for closure that includes friction tensiontherebetween to accomplish the union as distinguished from athreadedainion of the head with the main body thereby simplifyingconstruction and reducing cost of production.

lngthe practical art compartments for holding extra leads have beenprovided, by so relating parts of the pencil structure as form suchreceiving compartments. In the and under gravity force when disconnectedmain, closures for suchcompartments havebeen effected by the associationof adetachable head or cap with the main body' of the pencil. in thepresent structure, the main body or shell and the head are associatedfor relative longitudinal spacing under tension of their parts and if aclosure for the opening in the lead magazine depends upon the placementof the head in juxtaposition with the main pencil body, the spacing ofthe parts would permit leads to fall out unless special closureprovision for the lead compartment were provided. One of the objects ofthe invention is to provide a closure for the lead compartment,independent of the head member, the same being operable to efiectclosure through entry, in the usual course of assembling the pencilparts, of a member attached to the head into the pencil casing, andoperable by a withdrawal of said member to edect an opening thereof.

till

Another object of the invention relates to a method of assembling theparts of the pencil to attain the utmost of simplicity, durability andedciency; the new and improved results growing out of such methodhereinafter to be especially detailed.

Referring .to the drawings: Figure l is a plan .view showing the pencilwith parts in complete assembly.

Figure 2 is a vertical sectional view longitudinally through the centerof the pencil.

Figure 3 is a cross sectional view on the line 3-3 0*? Figure 2.

Figure l is a cross sectional view on the line 4 -4l of Figure 2.

Figure 5 is a perspective view showing a shell member adapted to beapplied to an interior shell or housing member, whereby, throughresiliency of its members, the said shell is firmly held in its desiredposition in connection with the assembly of pencil parts and alsoco-operates, with the extra lead compartment for closure or opening ofthe same under certain conditions oi association or disassociation ofparts of the pencil.

tion and illustrates an applied defiectionof a portion of its body forpurposes hereinafter to be fully described.

Figure 8 is a cross sectional view on the line %8 of Figure 2.

lit)

Referring to the drawings: 10 is a main shell or body terminating at itsforward ends with the gradually reduced portion 11; 11 indicating aninterior taper in the end of the reduced portion provides co-operationwith the tip port on to efiect a slip joint closure there between. 12 isa union member provided with a centrally disposed threaded way 13, Aforwardly extended part 14 of the union member is of larger diameteredbore than that of threaded opening 13, which is interiorly threaded asat 15. A rearwardly extended part 16 of the union member 12 is providedwith an open way 17 slightly larger than the general opening 13 therethrough: also the outer extremity of the rearward extension 16 istapered as at 18 to facilitate, in conjunction with the expanded opening16 therein, the entry of a lead propelling, member into the threaded way13.

A shell 19 is fixed to the interior of casing 10 and is provided withstop lugs 20 thereon (see Figure 8) to facilitate relative placementofunion member 12 in conjunction therewith to form inter-locktherebctween against rotation of said union member and to furthercooperate with the union member, a lead guide and tip to effect a firmunion of the specified parts in conjunction with the casing when theparts are completely assembled.

21 refers generally to a tubular member adapted to be disposed centrallywithin the main casing comprising tubular sections 21 and 21,respectively, of the differing dimensions shown and fixed together attheir overlapping portions, the same being provided with the flange- 22.Tube 21 is of a length sui'licient that when disposed within the maincasing its forward end is in abutment with the flange member 23 of theunion member 12 and its rear end in cross sectional alignment with therear end of said main casing. Tube 21 is fixed to the rearward extension16 of the union member and is provided with the spacing collar 24% fixedthereto. Tube 21 and union member 12 being thus united constitute a unitstructure that is designed to be inserted within casing 10.

25 refers generally to a tip, the rearward end thereof being shoulderedat 25 for abut ment with tube 10, and reduced in size as at 25 tofacilitate entry into tapered portion 11 of said casing.

26 is a lead guide designed to be fixed to the tip, its rear end beingthreaded for purposes of screw connection with the forward extension 1of union member 12.

In assembling, the tubular member 21 and the attached union member 12are inserted in the main casing. with the flange member 23, in abutmentwith stop members 20, the

lead guide is entered through the tip end of assess? the casing and isscrewed into the extension portion 14 of the union member 12, the lengthof the lead guide being such that when'the shouldered portion of the tipis in abutment with the forward end of the easing'the union member willhave been drawn into close contact with the shouldered members 20 oncasing 10, thereby forming a connected unit comprising the tube 21,union member 12, and lead guide 26 and in edecting such union of partsthe complete unit is firmly fixed within the casing.-

2? refers, generally, to a lead-propelling member, the same beingthreaded throughout a portion ot'its length and is designed toco-operate with union member 12 for purposes of projection or retractionwithin the lead guide when properly manipulated. 28 is a shell orhousing member provided as an operating support and guide for theleadpropelling member, its function being to house the lead propeller ina manner to facilitate its reciprocation, either by gravity or throughthe pull of the union member therein and to also so engage the leadpropeller that when it is rotated within tube 21 it will cause the leadpropeller to be i turned for the purpose of being advanced or retractedwithin the union member 12 through the co-operation of their respectivethreaded portions. Shell 28 is formed with longitudinal corrugations 29,extending throughout the portion of its length that lies within the maincasing 10 when inserted therein, as shown in Figure 2, and may beinturned at its forward end as at 30, for the purpose of closure againstcomplete disiodgment of the lead propelling member and the rear end 3%of said shell (that extends beyond the rearward limits ot the maincasing) is preferably round in form, as shown in said figure. The leadpropelling member may be flattened or expanded as at 31 to providesomewhat extended lug projections from the sides thereof for purposes ofengagement and co-operation with certain of the channelways formed bythe corrugations in the shell member 28, thereby providing a support andguide for the lead propeller within the shell member that willfacilitate its ready movement longitudinally therein and also theturning of the lead propeller with the shell.

A head member is provided, one of the purposes of which is to'form aconnecting support for the shell member another being to provide asuitable closure from the rearward end of the main casing 10, and forthe still further purpose of providing a support for a rubber eraser andalso it may serve as an attachment base or support for a clip member.

The head member, above referred to, includes in its structure a tubularmember 32, of the same diameter as the main casing 10.

To the forward end of the tube is fixed the flanged closure member 33,provided with a central perforation of diameter approximating that ofthe portion 34, of shell 28.

Shell member 35, is fixed within the tubular member 32, and is providedwith a, central threaded opening to facilitate co-operation with screwmember 36. In practice that portion 34 of shell member 28, that normallyextends beyond the forward end of the main casing 10, when the pencil isassembled as a unit, is inserted through theopening in closure member33, and suitably fixed-thereto and its rear end similarly fixed to shellmember 35, thereby providing a substantial unit comprising the headandshell member. The screw member 36, is provided for closure of theentry-wayfor the lead propelling means within the supporting shell.

The extreme rear end of casing 32 of the head may be inturned for thepurpose of engaging eraser member 37, said eraser member, when inserted,being seated upon the rear end portion of shell 35.

38 is a clip of a well known type that is designed to be entered withina longitudinal slot (not shown) in the head member 32, the same havingflanged projections for. bearing against the marginal interior edge ofsaid slot. In practice, clip 38, having been properly positioned, asshown in Figure 2, is fixed and held iii that position in connectionwith the insertion and fixingof shell 35 within tubular member 32. I

It will be observed that in the union of the parts of the pencil asdisclosed in Figure 2, that a chambered portion 39 is developed; saidchamber being housed laterally by. the walls of casing 10 and tube 21and at its ends, respectively, by the spacing collar 24 atits forwardend and the flange, 22, of casing 21, at its rear end. This chamber isdesigned to be utilized for housing extra leads and to that end anopening, as 40 (see Figures 2 and 4), is provided by cutting away aportion of the flange member 22, thereby permitting the-entry of leadsections.

1 haveherein provided a special means for closure of the extra leadcompartment that has special utility in connection with pencils, of theclass herein exemplified, wherein no means is contemplated or providedfor fixing the head to the main body of the pencil and wherein relativespacing apart of these elements is of such common occurrence that if thehead were depended upon for a closure for the chamber, inconveniencewould be experienced, from d slodgment of lead sections. To obviate thisdifficulty and to provide means independent.

of the head for closure of this chamber. 1

have provided a shortvtubular member 41, which is especially formed foruse with its forward end 42 slotted. as at 43. and deflected slightlyoutwardly beyond its normaldiameter, whereby, when the tube is insertedWithin the portion 21 of the tube 21, it will be tensioned against thewall of said tube section and' may be interlocked therewith through andby means of the lug 45 thereon engaging a perforation, or indent, 46 insaid tubular portion 21 The rearward portion of tube 21 is similarlyslotted as at 47, but at right angles to slots 43, the forward ends ofthe sections, formed by so slotting the tube, being flanged as at 48 and'49. In practice one of said sections (see 48in Fig. 7), is designed tobe inwardly deflected, as shown in said figure; thereby reducing thenormal interior diameter of the tube so that when said tubeis insertedin its place in the pencil, with its flanged portions overlying flange22 of tube section 21', (the shell member 28 not having been enteredinto tube 21) the flange 48 thereon will be suliiciently' spaced fromthe wall of the main casing 10 to permit leads within chamber 39 to bedislodged from the chamber. But the act of entering shell 28 into shell41 will cause an outward deflection of section 48 sufiicient to effact aclosure of opening 40 in the extra lead chamber to prevent dislodgmentof lead sections. From the foregoing description it will beseen thatonly by a complete separation of shell member 28 from its housing intubes 21 and shell 41, is it possible that lead sections may be removedfrom th chamber, thus obviating the difficulty that would result fromdislodgment of lead sections through the very common, and unconscious,practice of users of relative spacing of the head and main sectionsapart.

Special attention s called to the method of assembly of pencil partsherein employed, which con'iprchends the co-rclating into a single unitthe main casing. the tubular housing for the operating member. the leadguide and the tip.- This result is accomplished by the entry of theunits coinposing respectively the union member and tube and the leadguide and tip at opposite sides of the lug on the casing andscrewingthem together to form a compact unit. The value of this method ofuniting pencil parts not only resides in the resulting simplicity butalso provides a simple means of separating the parts for purposesofrepair.

What "1' claim is: v

1. In a pencil, in combination, a casing. a stop and feed memberstationary with rcspcctto the casing, a tip member and a lead propellingmember connected with the stop and feed member for assembling purposesand for advancing or retracting the lead propeller. v

2. lln a pencil, incoinbinat-ion, a casing, a stop and feed memberstationary with respect to the casing, a tip member, a load propellingmember connected with the stop and feed member-for assembling purposesand for advancing or retracting the lead propeller, and means forturning the lead propeller.

3. In a pencil, in combination, a casing, a lead propelling membertherein, a feed mechanism for the lead propellingniember fixed to thecasing, actuating means co-related to the lead propelling member in amanner to eilect rotation thereof and to permit limited relativelongitudinal movement between said members either under the influence ofgravity or the co-operating action of the feed member with the leadpropelling member, in cluding a longitudinally grooved sleeve andthreaded lead propeller fashioned with members for engaging the groovesin said sleeve l. in a pencil, in combination, a casing, a shouldermeinber thereon, a union member disposed rearwardly of the shoulder. aunit comprising a tip and a lead guide disposed forwardly of theshoulder, said unit provided with a part fashioned for joinder andtake-up relation with the union member.

5. in a pencil, in combination, a casing, provided with a shouldermember thereon, a union memberdisposed rearward of said shoulder, atubular member connected therewithv and extending" rearwardly' thereof,a unit comprising a tip, and a lead guide disposed torwardly of saidshoulder having part fashioned fortalre-up unionwith said union member,whereby when the parts specilied are joined, tensioned relationstherebetween will be established to produce a substantially integralunit.

t. in a pencil in combination, a casing, provided with a shoulder memberintermediate its ends, a union member disposed rearwardly of saidshoulder and fashioned for interlock therewith against rotation withinthe casing, said union men'iber being; inter nally threaded and providedat its rear portion with a guide channel, a tubular member connectedwith the union member and communicating with the guideway therein, alead guide connected with the forward end of said union member, a leadpropelling member threaded for co-operation with the threaded way in theunion member, an operating; member for said lead propelling memberadapted for insertion into the tubular member and fashioned for housingand engagement of the lead propelling member to cause its rotationtherewith and permit to reciprocate longitudinally thereot, and eadmember connected with said operatii 5 member to facilitate the turningand reciprocation thereof within the tubular member and for closure ofthe rearward end oi said pencil.

l1 pencil, in com'iination, a casing. a stop member therein, a unitcomprising; an internally threaded union member and a tubular member, aunit con'iprising a tip and. a lead guide adapted tor connection andtake-up relation with the union and tubular member and for stop relationwith the end moons? of the casing, whereby, through such connection, thetwo units respectively may be drawn into tensioned relation with thestop member and the casin 8. in a pencil, in combination, a casingprovided with an interiorly disposed stop member intermediate its ends,a union member removably disposed therein fashioned for abutment withthe stop member and also for co-relation therewith to prevent rotationwithin the casing, a tubularmember connected with one end of the unionmember, a unit comprising a lead guide and a tip adapted for connectionand take-up relation with the other end of the union member the tipmember thereol fashioned for abutment with the end or the tubular memberwhen such take-up relation is established, whereby the several partsspecified are firmly united to form a compact unit.

9. In a pencil, in combination, a casing provided with a stop membertherein, a union member provided with a threaded opening at one end, aguide-way at the other end and with an intermediate feed-Way therein, atube l i connected with the rear end of the union member extending tothe rearward limits of the casing, a tip adapted for connection andclosure with the forward end'of the casing, a lead guide fixed to saidtip and fashioned at its rear end for joinder and take-up relation withthe union member,

10. "in a pencil, in combination, a casing, a union member thereinprovided with a threaded way, a lead propelling member threaded forcooperation with the threaded way in said union member, a housing andoperating member for the lead propelling member fashioned forcooperation with the lead propelling member to cause it to be rotatedtherewith and to permit its free longitudinal movements therein, a headmember attached to the housing and operating memher, a tubular memberfor supporting the housing and operating member, and means supportingsaid housing to permit it to be rotated,

ii. in a pencil, in combination, a casing, a tubular member fixedtherein, a lead propolling member, a housing therefor rotatable withinthe tubular member fashioned for engagement with said lead propelling);member to cause it to be rotated therewith but permitting freelongitudinal move ment oi the itter therein, tensioning means betweenthe tubular member and the propolling housing, means for rotating saidhousing and means fixed within the casing for co-operation with too leadpropelling member to cause the latter to be advanced or retracted withinthe casing.

12. in a pencil, in combination, a casing, a tubular member thereinspaced. from the casing, closure member at the rear end of the casingoverlying said space and provided relation to said opening and meansadapted I for entry into the tubular member and for actuation of theresilient closure member to close the entry opening to the lead chamber.

13. In a pencil, in combination, a casing, a tubular member thereinspaced from the casing, spaced closure members arranged relative to saidcase and tube to form an extra lead chamber, one of said closure membersbeing provided with an opening, a resilient member fashioned to eflectclosure of said opening secured within the tubular member, its normalposition being in deflected position with relation to said open-- ing, alead propelling member and housing therefor the latter adapted forinsertion within the tubular member and for co-operation through suchinsertion with the resilient member to cause expansion thereof to closethe opening in the extra lead chamber.

14. In a pencil, in combination, a casing, a tubular member therein andspaced therefrom, closure members associated therewith adapted to forman extra lead chamber, one disposed, approximately at the rear extremityof the casing and the other spaced forwardly therefrom, the former beinprovided with an exit opening communicating with the chamber, a closuremember related to the opening into the chamber in a manner normally inclearance thereof but operable to effect closure, a head member andmeans connected therewith, adapted through entry into the body of thepencil to actuate the last named closure member to c ose the openinginto the extra lead chamber.

15. In a pencil, in combination, a casing provided with an extra leadchamber therein l'laving an entry opening thereinto, closure means forthe, opening into the extra lead chamber, comprising a shell member,disposed within the forward portion of the extra lead chamber andformed. with a resi-lient flanged member lying normally in provided withan extra lead chamber therein having an entryway thereto, meansassociated with said casing for efiecting'closure of said entryway intothechamber, a head and means associated therewith and adapted throughinsertion into the pencil body to actuate said closure means to effect aclosure of the opening into the chamber and by withdrawal of the same toeffect an opening thereof.

17. In a pencil, in combination, a casing, a lead guidetherein, a feedmember, a lead propelling member adapted to co-operate with said feedmember to effect advancement or retraction thereof lengthwise of thepenoil, an operating means for the lead propelling member suitablysupported in the casing and fashioned for relative inter-lock with thelead propelling member to facilitate the latters being turned therewithto effect such advancement or retraction thereof and to permit freelongitudinal movement of said operating member independent of themovement of the lead propelling member and a head member connected withsaid lead propelling member proportioned and fashioned to effect aclosure of the rear end of the casing in conjunction with the entry ofthe lead propelling member thereinto.

18. In a pencil, in combination, a casing, a tip associated therewith, alead guide communicating with the tip, a lead'propelling member, asupport therefor within the easing, actuating means for said leadpropelling member adapted for projection within or withdrawal from saidsupport, a housing for said actuating means, a head member connectedwithsaid housing and means for tensioning the supporting and the housingthe latter into the former to facilitate resistance against relativelongitudinal movement therebetween.

19. In a pencil in combination, a casing for supporting operatingmembers to facilitate the projection of a lead member including leadadvancing means therethrough to a point of exposure. a head member andassociated means adapted to function with the lead advancing means inthe pencil body when co-related for operation and tensioning meansfunctioning through such co-relationship of parts to effect a resistanceagainst relative longitudinal movement between said head and casing.

In testimony whereof I afiix my signature.

JOHN C. WAHL.

